[readerrrr]

Sure, you have to take the limits of their engine into account. The load time is under a second on modern machine and with SSD it is almost instant.

Hopefully HL3( ... ) comes with seamless levels.

[tehwalrus]

I couldn't afford an SSD big enough for my entire steam collection... ;)

and I too hope to play HL3 at some point before I die!

[eropple]

Steam supports splitting libraries. Even before that, symlinks were common.